According to Vygotsky, children pass through three stages of conceptual development. In the first stage, they form ___ concepts; in the second stage, they form ___ concepts; and in the third stage, they form ___ concepts

The backward procedure can be successful in producing a CR if

a. the CS is very intense. b. the CR has a long duration. c. the CS has a long duration. d. the US has a long duration. e. the UR has a long duration.

Research finds that increases in loneliness are tied to

heightened rates of depression in both teenagers and adults, but this does not suggest that the depression is a direct result of loneliness. This is an important consideration for the critical thinking concept of A) falsifiability. B) replicability. C) Occam's Razor. D) correlation versus causation.